Structural steel for the manufacture of parts of drill bits

Enhancement of durability of drill bit supports

“…A new steel has been developed for drill bit components based on study of the data bank built up in the All-Union Scientific Research Institute of Drilling Technology (VNIIBT), PO "Izhstal'," and I. M. Gubkin Moscow Institute of Petroleum and Gas [1][2][3][4][5], and analysis of the binominal dependences of the physicomechanical properties on the content of alloying elements in steel [4]. Chemical compsotion of batch produced and the newly developed steels are in Table i. As seen from Table i, the new steel 20KhN3MFA is characterized by its high carbon and manganese contents and is additionally alloyed with vanadium and modifed with zirconium.…”